White shadows using ShadowedRenderPass

Troubleshooting graphics
1

Hello,



I am having trouble with shadows in jME2. I am trying to render shadows in a simple application (two boxes and two dynamic Nodes (one box and one sphere) don't think it minds but jut in case…), but I am getting "lighted" shadows instead of dark/black ones…  :?



I am using code partially borrowed from flagrust's lesson9 and the forums, by using a passmanager and two passed: first one RenderPass and then ShadowedRenderPass:



        // ---- Passes and passmanager
        passManager = new BasicPassManager();

        //RenderPass (to render SkyBox first as it is only 10x10x10)
        RenderPass rPass = new RenderPass();
        rPass.add(skybox);
        passManager.add(rPass);

        //ShadowPass
        ShadowedRenderPass shadowPass = new ShadowedRenderPass();
        shadowPass.add(rootNode);
        shadowPass.addOccluder(shadowTester);     // jME's Box
        shadowPass.addOccluder(phyBall);                // jME-Physic's dynamic node
        shadowPass.setRenderShadows(true);
        shadowPass.setLightingMethod(ShadowedRenderPass.LightingMethod.Modulative);
        passManager.add(shadowPass);



I have been playing with a ShadowTweaker to test it and I have success (dark shadows) by changing the parametres to:

Blend for Light Passes (S/D)

  • DestinationColor (default)

  • Zero or OneMinusDestinationAlpha instead of OneMinusSourceAlpha



Blend for Texture Pass (S/D)

  • DestinationColor (default)

  • Zero (default)



Are default blending parameters wrong or I am missing something? I know I'd rather use DirectionalShadowMapPass but in the future I'd like to cast shadows from near point lights (like a torch or something).

A screenshot is attached.

Thank you all!

2

Try lowering the global ambient values of the lightstate. There is also a shadow tweaker in the example I believe, poke around.

3

Hello,



Thank you for your response. These are my ambient values:



light.setAmbient( new ColorRGBA( 0.1f, 0.1f, 0.1f, 1.0f ) );
lightState.setGlobalAmbient(new ColorRGBA(0.1f, 0.1f, 0.1f, 1f));



I think they are low enough to cast dark shadows ;)

I have been already trying the shadow tweaker and changing one parameter it works (see my previos post), but in the example there's no need to change any value in it...

4

use additive lighting not modulative

ShadowedRenderPass.LightingMethod.Additive

5

or do this:


light.setAmbient( new ColorRGBA( 1f, 1f, 1f, 0.0f ) );
lightState.setGlobalAmbient(new ColorRGBA(1f, 1f, 1f, 0f));



lights with 0 as alpha will cast correct shadows.
6

Hello,



I've moved to a new flat so I've been disconnected from the internet for a while (a month and a half…) :stuck_out_tongue:



blue_veek, I've tryed changing alpha values and it works as it should. Thnks

7
joliver82 said:

Hello,
I've moved to a new flat so I've been disconnected from the internet for a while (a month and a half...) :P
blue_veek, I've tryed changing alpha values and it works as it should. Thnks


happy to help.  :D